JPH01223399A - Deleterious material treating vessel - Google Patents
Deleterious material treating vesselInfo
- Publication number
- JPH01223399A JPH01223399A JP63048658A JP4865888A JPH01223399A JP H01223399 A JPH01223399 A JP H01223399A JP 63048658 A JP63048658 A JP 63048658A JP 4865888 A JP4865888 A JP 4865888A JP H01223399 A JPH01223399 A JP H01223399A
- Authority
- JP
- Japan
- Prior art keywords
- polymer
- cement mortar
- polymer cement
- mortar layer
- hazardous substance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 title description 10
- 230000002939 deleterious effect Effects 0.000 title 1
- 239000011433 polymer cement mortar Substances 0.000 claims abstract description 47
- 229920000642 polymer Polymers 0.000 claims abstract description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000011347 resin Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000004576 sand Substances 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 10
- 239000011230 binding agent Substances 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 4
- 239000000383 hazardous chemical Substances 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 11
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 239000004925 Acrylic resin Substances 0.000 claims description 4
- 229920000178 Acrylic resin Polymers 0.000 claims description 4
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 2
- 239000002174 Styrene-butadiene Substances 0.000 claims 3
- 239000011115 styrene butadiene Substances 0.000 claims 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 19
- 230000035699 permeability Effects 0.000 abstract description 11
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- 238000005452 bending Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 229920006254 polymer film Polymers 0.000 abstract description 5
- -1 poly acrylic ester Chemical class 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract description 2
- 239000004575 stone Substances 0.000 abstract description 2
- 239000006004 Quartz sand Substances 0.000 abstract 1
- 238000001035 drying Methods 0.000 description 12
- 239000011083 cement mortar Substances 0.000 description 10
- 230000001070 adhesive effect Effects 0.000 description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 6
- 239000000460 chlorine Substances 0.000 description 6
- 229910052801 chlorine Inorganic materials 0.000 description 6
- 239000011414 polymer cement Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 239000004567 concrete Substances 0.000 description 5
- 238000005336 cracking Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 5
- 239000000839 emulsion Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000004568 cement Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000002301 combined effect Effects 0.000 description 3
- 238000001723 curing Methods 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- 229920002125 Sokalan® Polymers 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229920003244 diene elastomer Polymers 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000004584 polyacrylic acid Substances 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002901 radioactive waste Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- DHZSIQDUYCWNSB-UHFFFAOYSA-N chloroethene;1,1-dichloroethene Chemical compound ClC=C.ClC(Cl)=C DHZSIQDUYCWNSB-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920006173 natural rubber latex Polymers 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920006174 synthetic rubber latex Polymers 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Refuse Receptacles (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
本発明は、例えば放射性廃棄物、毒性物質、その他の有
害物質の処理容器に関するものである。The present invention relates to a container for processing, for example, radioactive waste, toxic substances, and other harmful substances.
従来より、放射性廃棄物の処理容器として、いわゆるド
ラム缶内面にポリマー含浸コンクリート層を設けたもの
が提案されており、このものは物性面及び耐久性におい
てそれなりに高い評価を受けていることは周知の通りで
ある。
しかしながら、ポリマー含浸コンクリートを内面にライ
ニングしたドラム缶とは異なった低価格で優れた特性の
処理容器も求められ始めている。
すなわち、曲げ強度、圧縮強度に優れ、かつ、耐候性が
良く、さらには変形能力にも富み、又、耐吸水性及び耐
透水性にも′潰れ、しかも耐塩素透過性や耐中性化性に
も優れた処理容器の開発が求められている。Conventionally, so-called drums with a polymer-impregnated concrete layer on the inner surface have been proposed as containers for the disposal of radioactive waste, and it is well known that these containers have been highly evaluated in terms of physical properties and durability. That's right. However, there is a growing demand for processing containers that are lower in price and have superior properties, different from drums whose inner surfaces are lined with polymer-impregnated concrete. In other words, it has excellent bending strength and compressive strength, has good weather resistance, and has excellent deformation ability.It also has excellent water absorption and permeability resistance, as well as chlorine permeation resistance and carbonation resistance. There is also a need for the development of superior processing containers.
本発明者は、前記要望に沿った研究開発を鋭意押し進め
ていった結果、金属製容器の内面に硬質粒子とバインダ
樹脂とからなる下地層を設け、該下地層上にポリマーセ
メントモルタル層を設け、該ポリマーセメントモルタル
層の表面にポリマー塗膜を設けた有害物処理容器は、前
記の要望事項が大幅に満たされていた°ことを見出した
のである。
尚、ここでポリマーセメントモルタルとは、結合材に例
えばポルトランドセメントとポリマーとを用いて、細骨
材を結合したモルタルのことで、換言すればセメントモ
ルタルにポリマーを混和したものである。
ポリマーセメントモルタルでは、内部に存在する比較的
大きな細孔がポリマーで充填又は連続ポリマーフィルム
でシールされた組織構造が形成される為、その結果とし
て水の吸水及び透水に対する抵抗性並びに気体の透瘍に
対する抵抗性が著しく向上する・
すなわち、ポリマーセメントモルタルを利用することに
より、通常のセメントモルタルに比べて以下のような物
性が改善されることが判明したのである。
（１）耐候性
（２）接着性
（３）乾燥条件下における強度発現性
（４）中性化に対する抵抗性・・・・・・二酸化炭素（
ＣＯ２）透過の抑制
（５）塩化物イオン（ＣＩ−）浸透に対する抵抗性（６
）酸素（０２）浸透に対する抵抗性（７）吸水及び透水
に対する抵抗性
（８）凍結融解に対する抵抗性・・・・・・適度の空気
連行とポリマーを含む水密構造による
（９）ひび割れに対する抵抗性・・・・・・引張強さと
伸び能力の向上と乾燥収縮の低減による
又、有害物処理容器として用いられる例えば大型ライニ
ングドラム缶の製造上並びに使用上から。
ライニング材であるポリマーセメントモルタルに特に要
求される主な物性は下記の通りである。
〈１）強度発現性；薄肉の為、ライニング材の体積に比
べ表面積が大きいから、乾燥の影響を受けやすい、その
為、特に、乾燥条件下における強度発現性が良いこと。
（２）耐候性；長期間放置しても機械的強度が低下しな
いこと。
（３）接着性；ドラム缶の鋼材との接着性が良好なこと
、又、ドラム缶が変形しても容易に剥離しないこと。
（４）ひび割れに対する抵抗性；ひび割れが生じにくい
こと、その為には乾燥収縮が小さいこと。
（５）耐透水・透気性；ドラム缶の腐食防止の為、水や
酸素を透過しにくいこと、又、ライニング材自身が中性
化しにくいこと。
（６）耐透過性；内容物に含まれる塩素等の腐食生成分
がライニング材を透過しにくいこと。
そこで、まず各種ポリマーを用いたポリマーセメントモ
ルタル（ＰＣＭ）の′強度性状を調べたので、これを表
１に示す。
表１
ＳＢＲ：スチレン−ブタンジエンゴム
ＰＡＥ：ポリアクリル酸エステル
セメントモルタルと比較して、ＰＣＭの引張り及び曲げ
強度は著しく増大しており、このことはポリマー自体の
高い引っ張り強度の寄与とセメント水和物−骨材量の接
着力の増加によるものであると考えられる。
尚、ポリマーセメントモルタルの最適の養生方法は、最
初に湿潤養生してセメントの水和を促進した後、乾燥養
生してポリマーフィルムの強度を発現させることであっ
た。このような乾燥条件下での強度発現性の良好であ′
る点が、ＰＣＭの特徴の一つであり、特に、ポリマーと
してＰＡＥ、５Ｂｒｌの場合が優れていた。
又、各ＦＩＰＣＭを屋外に暴露した際の、曲げ及び圧縮
強度の経時変化を調べた所、ポリマー未混入のセメント
モルタルに比べてＰＡＥ又はＳＢＲ混入のセメントモル
タルの曲げ強度は高く、又長期間経過後も強度は低下し
ておらず、優れた耐候性を示していた。
又、変形能力について調べると、ＰＣＭの応力−ひずみ
関係と変形能力は、弾性係数の小さい（０，００１〜ｆ
ｏｘ １０’Ｋｇｆ／ａｍ”）ポ、リマーを含む為、セ
メントモルタルと比較して著しく改善されることが判っ
た。
一般にポリマーセメント比が増加すると伸び能力は増大
し、弾性係数は若干減少するが、ポアソン比は大きく変
化しない。
又、接着強度について調べると、ＰＣＭの接着強度は、
含有ポリマーの高い接着性に起因して優れており、セメ
ントモルタルやコンクリートは勿論のこと、石材、タイ
ル、鋼材、木材、レンガ等の各種建築材料によく接着す
る。
この接着性はポリマーセメント比の増加に伴って改善さ
れる。尚、ポリマーとしてＰＡＥやＳＢＲを用いた場合
において、ポリマーセメント比が約５％程度から接着性
の向上効果は著しい。
又、乾燥収縮について調べると、ＰＧＭの乾燥収縮は、
セメントモルタルと比較して大きい場合と小さな場合と
があり、一般的にはポリマーセメント比の増加に伴って
減少する傾向にあることが判った。
乾燥材令２８日の乾燥収縮を表２に示す。
乾燥収縮の大きさとひび割れ抵抗性とはほぼ比例関係に
あるが、ＰＣＭは前記のように、伸び能力が大きく、変
形に対する追従性が良好なことから、乾燥収縮が小さい
ことと相まってポリマー未混入のセメントモルタルに比
べひび割れ抵抗性は大きい。
表２
又、耐吸水性及び耐透水性について調べると、ＰＣＭで
は、内部に存在する比較的大きな細孔がポリマーで充填
又は連続ポリマーフィルムでシールされた組ａｍ造が形
成される為、通常ポリマーセメント比の増加に伴って、
その吸水及び透水に対する抵抗性が改善されることが判
った。
特に、ポリマーとしてＰＡＥ又はＳＢＲが用いられた場
合に優れていた。
又、耐塩素透過性について調べると、優れた防水性に起
因して、塩化物イオン（ＣＩ−）の浸透に対する抵抗性
もポリマーセメント比の増加に伴って改善されることが
判った。
表３に塩化物イオンの拡散係数を示す。
尚、耐塩素透過性に優れていることは、飛来塩分等によ
るドラム缶の発錆防止に有効である。
表３
又、耐中性化性について調べると、前述した組織構造を
有することから、ＰＣＭの気密性は優れており、ポリマ
ーの混入によって中性化に対する抵抗性が向上する。特
に、ＰＡＥの中性化深さはＳＢＲやＰＶＡＣに比べても
著しく小さい。
このことは酊蔵中のドラム缶の防錆に対して有効なこと
を示している。
尚、ＳＢＲが用いられても、用いられない場合に比べれ
ば中性化深さは著しく小さい。
尚、ＰＣＭに用いられるポリマーには、上記の他にも例
えば天然ゴムラテックス、アクリロニトリル−ブタンジ
エンゴム、ブタジェンゴム等の合成ゴムラテックス、ポ
リ酢酸ビニル、塩化ビニリデン−塩化ビニル系樹脂、ポ
リプロピレン等の熱可塑性樹脂エマルジョン、エポキシ
系樹脂等の熱硬化性樹脂エマルジョン、混合ディスバー
ジョンといった水性ポリマーディスバージョンを用いる
ことができるが、これらの中でもＰＡＥ及びＳＢＲが望
ましく、有害物処理容器、例えば大型ライニングドラム
缶用のライニング材として最も望ましいものはＰＡＥで
あった。
尚、上記したポリマーセメントモルタル層の厚みは、薄
ずぎると効果が小さいことがら、そのライニング厚は約
１１厚以上あることが望ましく、例えば約１〜６■ある
ことが望ましい。
又、このポリマーセメントモルタル層の表面にポリマー
塗膜を設けた場合と設けなかった場合とを比較すると、
耐透水性が大幅に異なり、ポリマー塗膜を設けておくこ
とで耐透水性が大幅に改善されたことになり、ボリゼー
塗膜を設けておくことが大事であった。
尚、このポリマー塗膜のポリマーとしては、ポリマーセ
メントモルタル層に用いたポリマー、例えばポリアクリ
ル酸エステルあるいは５ＢｒＬ等を適宜選べば良い。
又、ポリマーセメントモルタル層と金属材との間には、
硬質粒子とバインダ樹脂とからなる下地層を設けておく
ことが極めて大事であった。
尚、このような下地層を設けていない場合には、ポリマ
ーセメントモルダル層が処理容器の変形等によってたや
すく剥離損傷し、ポリマーセメントモルタル層を設けた
意味が半減したのである。
尚、この下地層の厚みは約０．０５〜Ｏ，１ｗｎもあれ
ば充分であり、そして硬質粒子としてはその大きさが約
１，２■以下のケイ砂、硬質砂岩砂、除冷鉱滓等の中か
ら選ばれる一種以上のものを用いればよく、又、バイン
ダ樹脂としてはポリマーセメントモルタル層に用いたポ
リマー、例えばポリアクリル酸エステル及びＳ Ｂ Ｉ
ｔの中から選ばれる適宜なものを用いることができる。
尚、これまでは主としてポリマーセメントモルタル層に
よる効果の向上を主として述べたものであるが、曲げ強
度及び圧縮強度の特性は、ポリマーセメントモルタル層
とその上のポリマー塗膜との複合作用によってより一層
向上したものであり、又、耐候性は、下地層とポリマー
セメントモルタル層とその上のポリマー塗膜との三者複
合作用によってより一層向上したものであり、又、変形
能力については、ポリマーセメントモルタル層とそ−の
上のポリマー塗膜とによってより一層向上したものであ
り、又、ライニング層の接着強度は下地層とポリマーセ
メントモルタル層との複合作用によって一層向上したも
のであり、又、乾燥収縮はポリマーセメントモルタル層
とポリマー塗膜との複合作用によってより一層向上した
ものであり、そして耐吸水性、耐透水性、耐塩素透過性
及び耐中性化性についてもポリマーセメントモルタル層
とポリマー塗膜さらには下地層等の複合作用によってよ
り一層向上したものであり、これら王者の複合作用によ
って極めて望ましい有害物処理容器となったのである。As a result of diligently pursuing research and development in line with the above-mentioned requests, the present inventor provided a base layer made of hard particles and a binder resin on the inner surface of a metal container, and provided a polymer cement mortar layer on the base layer. It was discovered that the hazardous substance disposal container provided with the polymer coating film on the surface of the polymer cement mortar layer largely satisfies the above-mentioned requirements. Note that the term "polymer cement mortar" here refers to a mortar in which fine aggregate is bonded using, for example, Portland cement and a polymer as a binding material, in other words, it is a cement mortar mixed with a polymer. In polymer cement mortars, a tissue structure is formed in which relatively large internal pores are filled with polymer or sealed with a continuous polymer film, resulting in resistance to water absorption and permeation as well as gas permeability. In other words, it has been found that by using polymer cement mortar, the following physical properties are improved compared to ordinary cement mortar. (1) Weather resistance (2) Adhesion (3) Strength development under dry conditions (4) Resistance to carbonation...carbon dioxide (
Inhibition of CO2) permeation (5) Resistance to chloride ion (CI-) permeation (6)
) Resistance to oxygen (02) penetration (7) Resistance to water absorption and permeation (8) Resistance to freezing and thawing... due to moderate air entrainment and watertight structure containing polymer (9) Resistance to cracking ...By improving tensile strength and elongation ability and reducing drying shrinkage, and also in the production and use of, for example, large lined drums used as containers for the disposal of hazardous substances. The main physical properties particularly required of polymer cement mortar, which is a lining material, are as follows. (1) Strength development: Because it is thin and has a large surface area compared to the volume of the lining material, it is easily affected by drying, so it has good strength development, especially under dry conditions. (2) Weather resistance: Mechanical strength should not decrease even if left for a long period of time. (3) Adhesiveness: Good adhesion to the steel material of the drum, and should not easily peel off even if the drum is deformed. (4) Resistance to cracking; cracking is less likely to occur, and therefore drying shrinkage must be small. (5) Water permeability/air permeability: In order to prevent corrosion of the drum, water and oxygen should not easily permeate, and the lining material itself should not be easily neutralized. (6) Permeation resistance: Corrosion products such as chlorine contained in the contents do not easily permeate through the lining material. Therefore, we first investigated the strength properties of polymer cement mortar (PCM) using various polymers, which are shown in Table 1. Table 1 SBR: Styrene-butane diene rubber PAE: Polyacrylate ester Compared to cement mortar, the tensile and flexural strength of PCM is significantly increased, which is due to the contribution of the higher tensile strength of the polymer itself and the cement hydration. This is thought to be due to an increase in the adhesive force between the material and the amount of aggregate. The optimal curing method for polymer cement mortar was to first perform wet curing to promote hydration of the cement, and then dry curing to develop the strength of the polymer film. It has good strength development under such dry conditions.
This is one of the characteristics of PCM, and in particular, PAE and 5Brl were excellent as polymers. In addition, when each FIPCM was exposed outdoors, we investigated the changes in bending and compressive strength over time, and found that the bending strength of cement mortar mixed with PAE or SBR was higher than that of cement mortar without polymer mixed, and also after a long period of time. After that, the strength did not decrease, and it showed excellent weather resistance. In addition, when examining the deformation ability, the stress-strain relationship and deformation ability of PCM are found to be
ox 10'Kgf/am"), it was found to be significantly improved compared to cement mortar because it contains polymer and remer. In general, as the polymer-cement ratio increases, the elongation capacity increases and the elastic modulus slightly decreases, but , Poisson's ratio does not change significantly. Also, when examining the adhesive strength, the adhesive strength of PCM is:
It has excellent adhesive properties due to the high adhesive properties of the polymers it contains, and it adheres well to various building materials such as not only cement mortar and concrete, but also stone, tiles, steel, wood, and bricks. This adhesion improves with increasing polymer-cement ratio. Note that when PAE or SBR is used as the polymer, the effect of improving adhesion is remarkable from a polymer cement ratio of about 5%. Also, when examining the drying shrinkage, the drying shrinkage of PGM is
It was found that there are cases where it is larger and cases where it is smaller than cement mortar, and it generally tends to decrease as the polymer cement ratio increases. Table 2 shows the drying shrinkage after 28 days of dry material age. There is a nearly proportional relationship between the size of drying shrinkage and cracking resistance, but as mentioned above, PCM has a large elongation ability and good deformation followability, which, combined with a small drying shrinkage, makes it possible to use PCM without polymers. It has greater cracking resistance than cement mortar. Table 2 In addition, when examining water absorption resistance and water permeation resistance, it is found that in PCM, a structure is formed in which relatively large pores existing inside are filled with polymer or sealed with a continuous polymer film. With the increase of cement ratio,
It has been found that its resistance to water absorption and permeation is improved. In particular, it was excellent when PAE or SBR was used as the polymer. Further, when examining the chlorine permeability resistance, it was found that due to the excellent waterproof property, the resistance to chloride ion (CI-) penetration also improved as the polymer cement ratio increased. Table 3 shows the diffusion coefficient of chloride ions. In addition, the excellent chlorine permeability is effective in preventing rusting of drums due to airborne salt and the like. Table 3 Furthermore, when examining the carbonation resistance, PCM has excellent airtightness because it has the above-mentioned structure, and the resistance to carbonation is improved by mixing the polymer. In particular, the carbonation depth of PAE is significantly smaller than that of SBR or PVAC. This shows that it is effective in preventing rust in drums during storage. Note that even when SBR is used, the neutralization depth is significantly smaller than when SBR is not used. In addition to the above, polymers used for PCM include natural rubber latex, synthetic rubber latex such as acrylonitrile-butane diene rubber, butadiene rubber, polyvinyl acetate, vinylidene chloride-vinyl chloride resin, and thermoplastics such as polypropylene. Water-based polymer dispersions such as resin emulsions, thermosetting resin emulsions such as epoxy resins, and mixed dispersions can be used, but among these, PAE and SBR are preferable, and are suitable for lining hazardous materials treatment containers, such as large lined drums. The most desirable material was PAE. It should be noted that if the thickness of the polymer cement mortar layer is too thin, the effect will be small, so the lining thickness is preferably about 11 or more thick, for example about 1 to 6 thick. Also, when comparing the case where a polymer coating film was provided on the surface of this polymer cement mortar layer and the case where it was not provided,
The water permeability resistance was significantly different, and providing a polymer coating significantly improved water permeation resistance, so it was important to provide a Volizet coating. As the polymer for this polymer coating film, the polymer used for the polymer cement mortar layer, such as polyacrylic acid ester or 5BrL, may be selected as appropriate. Moreover, between the polymer cement mortar layer and the metal material,
It was extremely important to provide a base layer consisting of hard particles and a binder resin. In addition, if such a base layer is not provided, the polymer cement mortar layer is easily peeled off and damaged due to deformation of the processing container, etc., and the meaning of providing the polymer cement mortar layer is halved. It is sufficient for the thickness of this base layer to be about 0.05~0.1wn, and the hard particles include silica sand, hard sandstone sand, slowly cooled slag, etc. whose size is less than about 1.2cm. One or more binder resins may be used, and the binder resin may include the polymer used in the polymer cement mortar layer, such as polyacrylic acid ester and SBI
An appropriate one selected from t can be used. Up to now, we have mainly discussed the improvement of the effect of the polymer cement mortar layer, but the characteristics of bending strength and compressive strength are even more improved by the combined effect of the polymer cement mortar layer and the polymer coating film on it. Furthermore, the weather resistance was further improved due to the composite action of the base layer, the polymer cement mortar layer, and the polymer coating film thereon, and the deformability was improved even more than the polymer cement mortar layer. The adhesive strength of the lining layer is further improved by the combination of the base layer and the polymer cement mortar layer, and Drying shrinkage was further improved by the combined action of the polymer cement mortar layer and the polymer coating, and water absorption resistance, water permeability resistance, chlorine permeation resistance, and carbonation resistance were also improved compared to the polymer cement mortar layer. It has been further improved by the combined effects of the polymer coating film and the base layer, and the combined effect of these two elements has made it an extremely desirable hazardous substance disposal container.
図面は、本発明に係る有害物処理容器本体の一部断面図
である。
同図中、■は、内直径６５ｃｓ Ｘ内高さ９５ｃｍで、
底板及び上蓋共に０．６６＋ｓ’の鋼製のドラム缶の胴
体の側壁である。
２は、このドラム缶の胴体側壁１及び底板並びに上蓋の
内面に例えば塗布手段等の適宜な手段で設けられたチチ
ブフェロプライマー（秩父コンクリート工業（株）製の
珪砂混入アクリル系樹脂）層であり、このチチブフェロ
プライマー屑２はチチブフェロプライマー塗布後所定時
間乾燥させれば構成できる。
尚、乾燥時間は、夏期であれば３０〜６０分、冬期は１
〜２時間であり、手で擦った場合に珪砂が落ちない程度
を目安とすればよい。
尚、このプライマー処理に先立って、ドラム缶る。
又、上蓋バッキング部についても同様にテープ長生を行
っておく。
上記ブライマー処理によってドラｌ−缶の胴体部内面に
設けられたチチブフエロブライマー屑２上に、７，２に
ｇのチチプ吹付用プレミックスモルタル（秩父コンクリ
ート工業（株）製）と２．４１のチチブアクリルエマル
ジョン混和液とを１時間ハンドミキサーで撹拌して調合
したポリマーセメントモルタルを吹き付は手段等の適宜
な手段で吹き付け、又、ドラム缶の上蓋及び底板には、
それぞれ１．２７にｇのチチブ吹付はプレミックスモル
タルと０．４１１のチチブアクリルエマルジョン混和液
とを同様に撹拌して調合したポリマーセメントモルタル
を吹き付は又は流し込み手段で処理し、各々約２．５論
輪厚のポリマーセメントモルタル層３を設ける。
そして、ポリマーセメントモルタル層３がライニングさ
れた後、チチブアクリルエマルジョン混和液を水で希釈
（混和液：水＝１：２）した希釈液を用い、刷毛又は吹
付手段によって、ポリマーセメントモルタル層３の表面
を全面シーラー処理し、ポリマー塗膜４を設けることに
よって、本発明になる有害物処理容器が得られる。
° 上記のようにして構成した有害物処理容器と、鋼製
のドラム缶内面に普通ポルトランドセメント／珪砂（６
号珪砂／７号硅砂が１）＝１の配合で、水セメント比が
１００％のセメントモルタルを設けたのみの有害物処理
容器（比較例）との諸特性を比べると、表４に示す通り
であった。
表４The drawing is a partial cross-sectional view of the main body of the hazardous substance processing container according to the present invention. In the same figure, ■ indicates an inner diameter of 65 cs and an inner height of 95 cm.
Both the bottom plate and the top cover are the side walls of the body of a steel drum with a diameter of 0.66+s'. 2 is a layer of Chichibuferro primer (silica sand-containing acrylic resin manufactured by Chichibu Concrete Kogyo Co., Ltd.) provided on the inner surface of the body side wall 1, bottom plate, and top lid of this drum by an appropriate means such as a coating means; This Chichibuferro primer waste 2 can be formed by drying the Chichibuferro primer for a predetermined time after applying the Chichibuferro primer. The drying time is 30 to 60 minutes in summer and 1 minute in winter.
~2 hours, and the silica sand should not come off when rubbed by hand. Incidentally, prior to this primer treatment, a drum is prepared. Also, tape lengthening is performed on the upper lid backing portion in the same manner. On the Chichibu Ferro Brimer waste 2 provided on the inner surface of the body of the drum can by the above-mentioned Brimer treatment, 7.2 g of premix mortar for Chichibu spraying (manufactured by Chichibu Concrete Kogyo Co., Ltd.) and 2.41 g Polymer cement mortar prepared by stirring with a hand mixer for 1 hour with a mixture of acrylic acrylic emulsion of
For spraying 1.27 g of TiTibu respectively, a polymer cement mortar prepared by stirring the premix mortar and 0.411g of TiTibu acrylic emulsion mixture in the same manner is treated by spraying or pouring means, and about 2. A layer of polymer cement mortar 3 having a thickness of 5 mils is provided. After the polymer cement mortar layer 3 is lined, the polymer cement mortar layer 3 is lined with a diluted acrylic emulsion mixture with water (mixture: water = 1:2) using a brush or spraying means. By subjecting the entire surface to a sealer treatment and providing a polymer coating film 4, a hazardous substance disposal container according to the present invention can be obtained. ° The hazardous substance treatment container constructed as described above and the inner surface of the steel drum are covered with ordinary Portland cement/silica sand (6
Table 4 shows the comparison of various properties with a hazardous substance treatment container (comparative example) with a mixture of No. 1 silica sand/No. 7 silica sand (1) = 1 and a cement mortar with a water-cement ratio of 100%. Met. Table 4
本発明に係る有害物処理容器は、金属製容器の内面に硬
質粒子とバインダ樹脂とからなる下地層を設け、該下地
層上にポリマーセメントモルタル層を設け、該ポリマー
セメントモルタル層の表面にポリマー塗膜を設けたので
、このものは曲げ強度、圧縮強度、耐候性、変形能力、
接着強度、乾燥収縮、耐吸水性、耐透水性、耐塩素透過
性、耐中性化性等の特性いずれについても潰れており、
有害物の処理容器として極めて好ましいものである。In the hazardous substance treatment container according to the present invention, a base layer made of hard particles and a binder resin is provided on the inner surface of the metal container, a polymer cement mortar layer is provided on the base layer, and a polymer cement mortar layer is provided on the surface of the polymer cement mortar layer. Because of the coating, this product has excellent bending strength, compressive strength, weather resistance, deformation ability,
All of the properties such as adhesive strength, drying shrinkage, water absorption resistance, water permeability resistance, chlorine permeability resistance, and neutralization resistance are affected.
This is extremely preferable as a container for processing hazardous substances.
図面は、本発明に係る有害物処理容器の１実施例の一部
断面図である。
１・・・側壁、２・・・チチブフェロプライマー層（下
地層）、３・・・ポリマーセメン１−モルタル層、４・
・・ポリマー塗膜。The drawing is a partial cross-sectional view of one embodiment of the hazardous substance processing container according to the present invention. DESCRIPTION OF SYMBOLS 1... Side wall, 2... Chichibuferro primer layer (base layer), 3... Polymer cement 1-mortar layer, 4...
...Polymer coating.
Claims (8)
用いた下地層を設け、該下地層上にポリマーセメントモ
ルタル層を設け、該ポリマーセメントモルタル層の表面
にポリマー塗膜を設けたことを特徴とする有害物処理容
器。(1) A base layer made of hard particles and a binder resin is provided on the inner surface of a metal container, a polymer cement mortar layer is provided on the base layer, and a polymer coating film is provided on the surface of the polymer cement mortar layer. A hazardous substance disposal container featuring:
いて、下地層の厚さが約０．０５〜０．１ｍｍであるも
の。(2) The hazardous substance disposal container according to claim 1, wherein the base layer has a thickness of about 0.05 to 0.1 mm.
いて、バインダ樹脂が、アクリル系樹脂、スチレン−ブ
タジエン系樹脂の群の中から選ばれた一種以上のもの。(3) In the hazardous substance disposal container according to claim 1, the binder resin is one or more selected from the group of acrylic resins and styrene-butadiene resins.
いて、硬質粒子が、約１．２ｍｍ以下の大きさのもの。(4) The hazardous substance disposal container according to claim 1, in which the hard particles have a size of about 1.2 mm or less.
理容器において、硬質粒子が、ケイ砂、硬質砂岩砂、除
冷鉱滓の群の中から選ばれた一種以上のもの。(5) In the hazardous substance treatment container according to claim 1 or 4, the hard particles are one or more selected from the group of silica sand, hard sandstone sand, and slowly cooled slag.
いて、ポリマーセメントモルタル層は、その厚さが約１
〜６ｍｍであるもの。(6) In the hazardous substance disposal container according to claim 1, the polymer cement mortar layer has a thickness of about 1
~6mm.
理容器において、ポリマーセメントモルタル層のポリマ
ーが、アクリル系樹脂、スチレン−ブタジエン系樹脂の
中から選ばれた一種以上のもの。(7) In the hazardous substance disposal container according to claim 1 or 6, the polymer of the polymer cement mortar layer is one or more selected from acrylic resins and styrene-butadiene resins.
いて、ポリマー塗膜のポリマーが、アクリル系樹脂、ス
チレン−ブタジエン系樹脂の群の中から選ばれた少なく
とも一種以上のもの。(8) In the hazardous substance disposal container according to claim 1, the polymer of the polymer coating film is at least one selected from the group of acrylic resins and styrene-butadiene resins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63048658A JPH0631871B2 (en) | 1988-03-03 | 1988-03-03 | Hazardous material processing container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63048658A JPH0631871B2 (en) | 1988-03-03 | 1988-03-03 | Hazardous material processing container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01223399A true JPH01223399A (en) | 1989-09-06 |
| JPH0631871B2 JPH0631871B2 (en) | 1994-04-27 |
Family
ID=12809446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63048658A Expired - Lifetime JPH0631871B2 (en) | 1988-03-03 | 1988-03-03 | Hazardous material processing container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0631871B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0319998U (en) * | 1989-07-05 | 1991-02-27 | ||
| JPH05305274A (en) * | 1992-04-27 | 1993-11-19 | Shigeki Mori | Industrial waste pit |
| JP2011247856A (en) * | 2010-05-31 | 2011-12-08 | S Medical Shield Co Ltd | X-ray shielding panel, x-ray shielding wall, and method for constructing the same |
| JP2012504773A (en) * | 2008-10-06 | 2012-02-23 | グランクリート，インコーポレイテッド | Composition for radiation shielding structure |
| JP2014102092A (en) * | 2012-11-16 | 2014-06-05 | Fujimura Fume Kan Kk | Storage container for waste containing radioactive materials |
-
1988
- 1988-03-03 JP JP63048658A patent/JPH0631871B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0319998U (en) * | 1989-07-05 | 1991-02-27 | ||
| JPH05305274A (en) * | 1992-04-27 | 1993-11-19 | Shigeki Mori | Industrial waste pit |
| JP2012504773A (en) * | 2008-10-06 | 2012-02-23 | グランクリート，インコーポレイテッド | Composition for radiation shielding structure |
| JP2011247856A (en) * | 2010-05-31 | 2011-12-08 | S Medical Shield Co Ltd | X-ray shielding panel, x-ray shielding wall, and method for constructing the same |
| JP2014102092A (en) * | 2012-11-16 | 2014-06-05 | Fujimura Fume Kan Kk | Storage container for waste containing radioactive materials |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0631871B2 (en) | 1994-04-27 |
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